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Environ Sci Pollut Res Int

Title:		Identification of phytotoxins in different plant parts of Brassica napus and their influence on mung bean
Author(s):		Mehmood A; Naeem M; Khalid F; Saeed Y; Abbas T; Jabran K; Sarwar MA; Tanveer A; Javaid MM;
Address:		"Department of Agronomy, University College of Agriculture and Environmental Sciences, The Islamia University of Bahawalpur, 63100, Bahawalpur, Punjab, Pakistan. Department of Agronomy, University of Agriculture Faisalabad, Faisalabad, Pakistan. tagondaluaf@gmail.com. Department of Agronomy, College of Agriculture, University of Sargodha, Sargodha, Pakistan. tagondaluaf@gmail.com. Department of Plant Protection, Faculty of Agriculture and Natural Sciences, Duzce University, Duzce, Turkey. Crop Sciences Institute, National Agricultural Research Centre, Islamabad, Pakistan. Department of Agronomy, University of Agriculture Faisalabad, Faisalabad, Pakistan. Department of Agronomy, College of Agriculture, University of Sargodha, Sargodha, Pakistan"
Journal Title:		Environ Sci Pollut Res Int
Year:		2018
Volume:		20180424
Issue:		18
Page Number:		18071 - 18080
DOI:		10.1007/s11356-018-2043-x
ISSN/ISBN:		1614-7499 (Electronic) 0944-1344 (Linking)
Abstract:		"Plants in Brassica genus have been found to possess strong allelopathic potential. They may inhibit seed germination and emergence of subsequent crops following them in a rotation system. Series of laboratory and greenhouse experiments were conducted to determine the allelopathic impacts of Brassica napus L. against mung bean. We studied (1) the effects of aqueous extract (5%) of different plant parts (root, stem, leaf, flower, and whole plant) of B. napus, (2) the effects of leaf and flower extracts of B. napus at 0, 1, 2, 3, and 4% concentrations, and (3) the effect of residues of different B. napus plant parts and decomposition periods (0, 7, 14, and 21 days) on germination and seedling growth of mung bean. Various types of phenolics including quercitin, chlorogenic acid, p-coumeric acid, m-coumaric acid, benzoic acid, caffeic acid, syringic acid, vanillic acid, ferulic acid, cinamic acid, and gallic acid were identified in plant parts of B. napus. Among aqueous extracts of various plant parts, leaf and flower were found to have stronger inhibitory effects on germination and seedling growth traits of mung bean, higher concentrations were more toxic. The decomposition period changed the phtotoxic effect of residues, more inhibitory effect was shown at 14 days decomposition while decomposition for 21 days reduced inhibitory effect. The more total water-soluble phenolic was found in 5% (w/v) aqueous extract and 5% (w/w) residues of B. napus flowers at 14 days of decomposition (89.80 and 10.47 mg L(-1)), respectively. The strong inhibitory effects of B. napus should be managed when followed in rotation"
Keywords:		"Brassica napus/*chemistry/growth & development Crop Production/*methods Dose-Response Relationship, Drug Germination/*drug effects Pheromones/isolation & purification/*toxicity Plant Extracts/isolation & purification/*toxicity Seedlings/drug effects/growt;"
Notes:		"MedlineMehmood, Azhar Naeem, Muhammad Khalid, Farhan Saeed, Yousaf Abbas, Tasawer Jabran, Khawar Sarwar, Muhammad Aqeel Tanveer, Asif Javaid, Muhammad Mansoor eng Germany 2018/04/25 Environ Sci Pollut Res Int. 2018 Jun; 25(18):18071-18080. doi: 10.1007/s11356-018-2043-x. Epub 2018 Apr 24"